Smartphone use decreases trustworthiness of strangers

Trust is crucial for social, economic, and political relationships. Evidence shows the importance of trust in distinct areas, from the day-to-day forming of personal relations to the stability of democracies. In this paper, we ask how new technologies that compete for our attention affect the formation of trust between strangers. To that end, we study how smartphone use affects interactions with, and subsequent trust in, strangers. In our experiment, we had participants wait in groups of six for approximately 20 minutes, allowing them to interact as they wished. In one treatment, participants could use their smartphones during the wait time, while in the other they did not have access to their phones. We then randomly paired participants within each group to play a trust game and answer a brief survey. As predicted, we find that limiting phone access resulted in higher levels of trustworthiness.